142.1.2 Mounting in a control cabinet doorFig. 2.2 Control cabinet door mountingThe HPM can be installed in a cabinet door or in a panel of a boiler or a heat pump.The controller is designed to fit into a standard hole of 138 x 192 mm. Simply slidethe controller through the hole in the cabinet door or the boiler (heat pump) panel andturn the flaps until the controller is secured. No screwdriver or additional tools areneeded.2.1.3 Mounting in control cabinet on DIN-railFig. 2.3 Mounting on DIN-railThe socket of the HPM is also ready for direct mounting onto a DIN-rail, either insideof a cabinet or in any other housing in which a DIN-rail is available. Simply clip thesocket onto the DIN-rail and the mounting process is completed.Flaps for fasteningcontroller in cabinet doorLock for DIN-rail